The output of * operator in this solution is a struct, rather than a mPoly object. Nevertheless, the test suite does not check the type of the output.
L Y Cao, since you're such a wizard with indices, I'd love to see you solve this without converting to the array form. It would be interesting to compare the approaches.
Andrew Newell, thanks for your advice.
Most nonzero elements in row
Magic is simple (for beginners)
Create Volcano (or Atoll) martix. It is an extension of Bullseye matrix problem.
Put m balls into n boxes
Prime Letters = Removing
Find all vampire fangs
Multivariate polynomials - convert monomial form to array
Outer product of multiple vectors
Multivariate polynomials - emulate symbolic form
Multivariate polynomials - sort monomials
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